"Exception resolution" to prevent a memory leak, the JDBC Driver has been, forcibly.

Registered the JDBC driver [Com.alibaba.druid.proxy.DruidDriver] but failed to unregister it when the Web application is Stopped. To prevent a memory leak, the JDBC Driver has been, forcibly.
Org.apache.catalina.loader.WebappClassLoaderBase CLEARREFERENCESJDBC registered the JDBC driver [ Com.mysql.jdbc.Driver] but failed to unregister it the Web application is stopped. To prevent a memory leak, the JDBC Driver has been, forcibly.

The above is the exception general information.

The core is almost like this: To prevent a memory leak, the JDBC Driver has been the forcibly.

Online answer thousands, my error is the MySQL database password wrong.

Wrong password, password, password.